okay, the original arrived and I found all of the issues with the schematic and IvIark's vero. YAY!!!!here's a copy of the schematic with all of the correct values and with the 'voice' trimpot removed (just like in the original:

early.memoirs wrote:PL has a lower clipping level, much lower gain though.i find the curve control really muddied up the sound, you have to blend the clean stage in about 1:1 to get it a bit clear.

early.memoirs wrote:Had just finished a double sided layout for 1590B enclosure if anyone interested (a bit cramp). I haven't build it myself. Maybe in a week or two.

havent had a chance to build that board. since it utilizes 9mm pot which actually hard to find here so i made a second attempt on my layout. the goal is to fit it in 1590bb, utilizing board mounted pots + toggle switch. lot of jumpers to keep it single-sided.

I just finished* building this using IvIark's vero layout. I had (and am having) some trouble with the 1uF caps. I used big honkin' metal film box caps in 2 places where I could physically fit them. Then I figured out that if I socketed the remaining 1uF box caps, that raised them up enough to clear nearby components, so I could fit the rest that way. And that worked just great, until I tried to close the 1590BB. There isn't enough clearance with the pots+plastic dust covers+doublesided tape+PCB+socket+bigass box cap. I even removed the doublesided tape (it wasn't sticking to the plastic pot dust covers anyway; anybody got any tips for that??), and the caps still wouldn't fit.

I came back to this thread for johnk's photos, and it looks like those yellow-orange 1uF caps are tantalums (at least they look exactly like the handful of tantalums I have). I've never actually used tantalums before; I just ordered some as soon as I had trouble cramming the box caps in. Do the tantalums work/sound ok here, and if so, can someone help me out with polarity? Whenever I've seen electrolytics in the audio path, they've almost always been oriented with positive on the input side, negative on the output side. Is it that straight-forward?

Am I correct in thinking that all these 1uF caps in the Pork Loin are functioning as coupling capacitors? I just read that tantalums "should be avoided in audio coupling (bipolar) circuits" (AMZ's cap FAQ) -- does this apply here?

Sorry for cramming so many questions into one post. Thanks to anyone who has the patience to read and answer at least some of these.

Hello! If you were going to put a Send/Return insert point to splice before the Clean section of the Pork Loin (maybe a Swollen Pickle, for example), at what point in that schematic would it be best to patch it in? Ideally I'm looking to use a heavier drive pedal before the Clean preamp section, and still have the overdrive section in parallel. Hope this makes sense, thanks very much to everyone for this thread!